/*
* When the snake eat a fruti its size must be increased by 1 piece. This piece is added in the
* middle so the tail should shift by a position. The direction of this shift depends on the
* current direction of the tail
*/
public void eat() {
// add a new piece to the snake
SnakeTail tail = (SnakeTail) parts.get(parts.size() - 1);
parts.add(parts.size() - 1, new SnakeBody(tail.getX(), tail.getY(), tail.direction));
// shift the tail by 1 position with a direction that depends on its current position.
switch (tail.direction) {
case UP:
tail.moveDown();
break;
case DOWN:
tail.moveUp();
break;
case LEFT:
tail.moveRight();
break;
case RIGHT:
tail.moveLeft();
break;
}
}
